Java实现查找替换功能

查找

if(searchTxt.getText().equals("")){
                    JOptionPane.showMessageDialog(null, "查找内容不能为空！");
                }else if(!searchTxt.getText().equals("")){
                    //searchDialog.dispose();
                    if(fileChoose.focus == 1){
                        fileChoose.tp1.requestFocus(true);
                        str = fileChoose.tp1.getText();
                        startPosition = str.indexOf(searchTxt.getText());
                        endPosition = startPosition + searchTxt.getText().length();
                        fileChoose.tp1.select(startPosition, endPosition);
                        newEndPosition = endPosition;
                    }else if(fileChoose.focus == 2){
                        fileChoose.tp2.requestFocus(true);
                        str = fileChoose.tp2.getText();
                        startPosition = str.indexOf(searchTxt.getText());
                        endPosition = startPosition + searchTxt.getText().length();
                        fileChoose.tp2.select(startPosition, endPosition);
                        newEndPosition = endPosition;
                    }
                }

查找下一处

nextTemp = newEndPosition;
                if(fileChoose.focus == 1){
                    strAll = fileChoose.tp1.getText();
                    fileChoose.tp1.select(nextTemp, strAll.length());//选中所有未查找的字符串
                    nextStr = fileChoose.tp1.getSelectedText();
                    newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;//在未查找的字符串中查找对应字符在tp1中的位置
                    newEndPosition = newStartPosition + searchTxt.getText().length();
                    fileChoose.tp1.select(newStartPosition, newEndPosition);//找到文本，选择文本
                }else if(fileChoose.focus == 2){
                    strAll = fileChoose.tp2.getText();
                    fileChoose.tp2.select(nextTemp, strAll.length());//选中所有未查找的字符串
                    nextStr = fileChoose.tp2.getSelectedText();
                    newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;//在未查找的字符串中查找对应字符在tp1中的位置
                    newEndPosition = newStartPosition + searchTxt.getText().length();
                    fileChoose.tp2.select(newStartPosition, newEndPosition);//找到文本，选择文本
                }

替换

if(fileChoose.focus == 1){
                    fileChoose.tp1.requestFocus(true);
                    str = fileChoose.tp1.getText();
                    startPosition = str.indexOf(searchTxt.getText());
                    endPosition = startPosition + searchTxt.getText().length();
                    fileChoose.tp1.replaceSelection(replaceTxt.getText());
                    newEndPosition = endPosition;
                }else if(fileChoose.focus == 2){
                    fileChoose.tp2.requestFocus(true);
                    str = fileChoose.tp2.getText();
                    startPosition = str.indexOf(searchTxt.getText());
                    endPosition = startPosition + searchTxt.getText().length();
                    fileChoose.tp2.replaceSelection(replaceTxt.getText());
                    newEndPosition = endPosition;
                }

替换下一处

if(fileChoose.focus == 1){
                    fileChoose.tp1.requestFocus(true);
                    nextTemp = newEndPosition;
                    strAll = fileChoose.tp1.getText();////////////////////////////////
                    fileChoose.tp1.select(nextTemp, strAll.length());/////////////////////////////
                    nextStr = fileChoose.tp1.getSelectedText();
                    newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;
                    newEndPosition = newStartPosition + searchTxt.getText().length();
                    fileChoose.tp1.select(newStartPosition, newEndPosition);
                    fileChoose.tp1.replaceSelection(replaceTxt.getText());
                }else if(fileChoose.focus == 2){
                    fileChoose.tp2.requestFocus(true);
                    nextTemp = newEndPosition;
                    strAll = fileChoose.tp2.getText();
                    fileChoose.tp2.select(nextTemp,strAll.length());
                    nextStr = fileChoose.tp2.getSelectedText();
                    newStartPosition = nextStr.indexOf(searchTxt.getText()) + nextTemp;
                    newEndPosition =newStartPosition + searchTxt.getText().length();
                    fileChoose.tp2.select(newStartPosition, newEndPosition);
                    fileChoose.tp2.replaceSelection(replaceTxt.getText());
                }